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Visit: ksuiteach.org Visit: seeedudifferently.com Presentation is at: bigguyinabowtie.com/Google Check out my Youtube Channel! http://bit.ly/bigguybowtievideo Follow me on Twitter, Instagram, and Snapchat @bigguyinabowtie big

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Idea Share!

How would you use Raspberry Pi? Share Your thoughts here

Prize at the end for a favorite and random

monthly prizes

http://bit.ly/raspberrypiideashare

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It can do everything! Creating with

Raspberry Pi and Components

Presented by David Lockhart biggu

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About Me

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Our AgendaAbout The Big Guy in the Bow Tie Circuit TimeChallenge 1: Building an LED CircuitChallenge 2: Traffic LightPi CameraChallenge 3: SelfieChallenge 4: Add a ButtonChallenge 5: Use FiltersChallenge 6: Video

Challenge 7: Motion Sensor

Challenge 8: Time LapseChallenge 9: Create Your

Ownbig

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Circuit TimeScratch & Python & Circuits

© CC BY-SA 4.0

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Things You Will Need

2X Male/Female Jumper WiresLED

Resistor

BreadboardGPIO Reference Boardbig

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Simple CircuitYour Raspberry Pi can act as the power supply for simple circuits.

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Challenge 1: Building and

Coding an LED Circuitbiggu

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Code Your Raspberry Pi•Find this Slide Deck on the Raspberry Pi Playground at https://

goo.gl/XhMwdC

•Using the next few slides build an LED circuit, and code it in both Scratch and Python

•See if you can Flash the LED at Different Speeds •See if you can make an SOS signal

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Simple CircuitLet’s build a simple circuit now using our Raspberry Pi.

• Connect the Female End to the 3v3 pin and the male end to a row in the breadboard

• Put the LED in the same row splitting both sides of the bread board

• Put one end to the Resistor to the same row as the LED and connect the other end further down the breadboard

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Switching CircuitYour Raspberry Pi can act as a switch in the circuit, which can be controlled in software.

• Go through same steps as previous slide EXCEPT:

• Connect the wire in the LED row to a numbered pin

• Take another wire and connect a ground connector with the other end of the resistor

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Now to Program with Scratch on the Raspberry Pi

Open Scratch 1.4 and activate the GPIO server.

gpioserveronbig

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Creating a Blinking LED with Scratch!Setup your pin as an output.

config17out

Switch pin 17 on

gpio17onSwitch pin 17 off

gpio17off

Pause

Loop forever

Always start with:

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Python Coding Your LED

#FlashingLED

fromgpiozeroimportLEDfromtimeimportsleep

myled=LED(17)

whileTrue:myled.on()sleep(1)myled.off()sleep(1)

The Code

After coding your LED in Scratch, Code it in Python using the Code below!

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Coding Your LED Light Code the Light to Blink. Try some different values!

Try other values in ld.blink(): led.blink(5) led.blink(2, 0.5) led.blink(0.1, 10) led.blink(0.5, 0.5, 5, False)

# Flashing LED

from gpiozero import LED

led = LED(17)

led.blink()

The Code

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Other Commands You Can Use

led.on()-SwitchesthePinhigh

led.off()-SwitchesthePinlow

led.blink()-MakestheLEDblink

led.toggle()-ChangethestateoftheLED

led.pin.number-Returnsthepinnumber

led.is_lit-Returnsthecurrentstate

https://gpiozero.readthedocs.org

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Challenge 2: Traffic Light

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Code Your Raspberry Pi•Find this Slide Deck on the Raspberry Pi Playground at https://

goo.gl/XhMwdC

•Using the next few slides build a Traffic Light, and code it in Python

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Hardware ApplicationThere are two ways to build a traffic light

You can get a traffic light add on

You can do it via the Bread Board

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Traffic Light Coding

# Traffic Lights 1

from gpiozero import LED

from time import sleep

red = LED(21)

amber = LED(20)

green = LED(16)

red.on()

sleep(3)

red.off()

amber.on()

…

•Use the Code below in order to code the traffic light •Pay special attention to the pins the LED’s are connected to •The Code is not finished, can you finish it The Code

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AbstractionYou can removing complexity to make a task more accessible. Give it a TRY!

#TrafficLights1

fromgpiozeroimportLEDfromtimeimportsleep

red=LED(21)amber=LED(20)green=LED(16)

red.on()sleep(3)red.off()amber.on()…

#TrafficLights2

fromgpiozeroimportTrafficLights

fromtimeimportsleep

lights=TrafficLights(21,20,16)

lights.red.on()

sleep(3)

lights.red.off()

lights.amber.on()

…

The Original Code The Less Complex Code

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Where next?There are a WHOLE bunch of add ons you can use with the BreadBoard

LED Motion Sensor Buttons

Temp Sensor Motors

Lots More!big

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Pi Camera Taking Photos

© CC BY-SA 4.0

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- 5Mpx / 8Mpx - Full HD - Photo & video - Command line - Python module - Infra-red camera

Raspberry Pi camera module

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MaterialsYou will need:

Camera

Female / Female Jumper Wire

BreadBoard

Motion Sensor

Male / Female Jumper Wire

Button

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Connect the camera

•Find the Camera Connector

•Pull Up on the Black Tabs

•Push opposite end of Camera Module into connector snuggly and evenly

•Push Down on Black Tabsbiggu

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Camera CapabilitiesTimelapse High Speed Recording

Sensor & Images Infrared photography

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Test your camera•It’s important to test the Camera

to insure you have installed it correctly

•Go to the command line on your Raspberry Pi and type in the commands you have below

pi@raspberrypi:~$raspistill-oimage.jpg

pi@raspberrypi:~$raspistill-k

Ctrl + C to close preview

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Challenge 3: Take a Selfie

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Code Your Raspberry Pi•Find this Slide Deck on the Raspberry Pi Playground at https://

goo.gl/XhMwdC

•Using the next few slides build a selfie camera, and code it in Python

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Take a selfie

##selfie.pyfrompicameraimportPiCamerafromtimeimportsleep

camera=PiCamera()

camera.start_preview(alpha=192)sleep(3)camera.capture("/home/pi/image.jpg")camera.stop_preview()

•Go to Python 3 and enter in the selfie code •Find the Selfie in the File Manager

The Code

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Challenge 4: Add a Button

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Add a Button•Use your BreadBoard to build a Button for your

Camera

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Add Button code

##button.pyfrompicameraimportPiCamerafromgpiozeroimportButtonfromtimeimportsleep

camera=PiCamera()button=Button(17)

camera.start_preview(alpha=192)button.wait_for_press()sleep(3)camera.capture("/home/pi/button.jpg")camera.stop_preview()

Use Python Code to code your camera to take a picture every time you press the button

The Code

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Take Multiple Pictures with a Loop

##loop.pyfrompicameraimportPiCamerafromgpiozeroimportButtonfromtimeimportsleep

camera=PiCamera()button=Button(17)

camera.start_preview(alpha=192)foriinrange(5):button.wait_for_press()sleep(1)camera.capture("/home/pi/button{0}.jpg".format(i))camera.stop_preview()

Try out this code as an avenue to take multiple pictures!

The Code

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What's the difference?

…

button.wait_for_press()

for i in range(5):

sleep(3)

camera.capture("/home/pi/button{0}.jpg".format(i))

Change your multiple picture code to reflect the code below. What’s the difference?

The Code

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Challenge 5: Use Filters

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Code Your Raspberry Pi•Find this Slide Deck on the Raspberry Pi Playground at https://

goo.gl/XhMwdC

•Using the next few slides code to take pictures with Filters!

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Picamera effectsColor Swap Sketch

Negative Embossbiggu

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Picamera Effects•Start with the same code from your Selfie

•Use the code below to adjust

•Make sure you save it as an effect

…

camera.start_preview(alpha=192)

button.wait_for_press()

camera.image_effect = 'negative'

sleep(5)

camera.capture("/home/pi/negative.jpg")

camera.stop_preview()

• Try more effects: • negative • colorswap • sketch • emboss

The Code

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Challenge 6: Video

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Code Your Raspberry Pi•Find this Slide Deck on the Raspberry Pi Playground at https://

goo.gl/XhMwdC

•Using the next few slides code to take Video!

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Capturing video

##video.pyfrompicameraimportPiCamera

camera=PiCamera()camera.start_preview(alpha=192)camera.framerate=24camera.start_recording('my_video.h264')camera.wait_recording(15)camera.stop_recording()camera.stop_preview()

pi@raspberrypi:~ $ omxplayer my_video.h264

•Use the code on the left to capture video with the Raspberry Pi •Input the Command Line Code on the Right to Play Your Video The Code

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Challenge 7: Add a Motion

Sensorbiggu

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Code Your Raspberry Pi•Find this Slide Deck on the Raspberry Pi Playground at https://

goo.gl/XhMwdC

•Using the next few slides code to take Video!

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Add a Motion Sensor• First thing is first. Hook that Bad Boy Up with your

pins!

• The top of the motion sensor can come off to make it easier to see which cord goes where

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Add Motion Sensor Code

##motion.pyfrompicameraimportPiCamerafromgpiozeroimportMotionSensorfromtimeimportsleep

camera=PiCamera()sensor=MotionSensor(4)

camera.start_preview(alpha=192)sensor.wait_for_motion()sleep(3)camera.capture("/home/pi/pir.jpg")camera.stop_preview()

•After connecting the sensor, use the code below to take pictures with motion

The Code

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Challenge 8: Time Lapsebig

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Code Your Raspberry Pi•Find this Slide Deck on the Raspberry Pi Playground at https://

goo.gl/XhMwdC

•Using the next few slides code to create a time lapse!

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Capturing a time lapse

##timelapse.pyfrompicameraimportPiCamerafromtimeimportsleep

camera=PiCamera()fornuminrange(1440):

sleep(60)camera.start_preview(alpha=

192)camera.capture("/home/pi/

timelapse{0}.jpg".format(num))camera.stop_preview()

•Use the code below to create a time lapse

The Code

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Challenge 9: Create Your Own Projectbig

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Code Your Raspberry Pi

•Find this Slide Deck on the Raspberry Pi Playground at https://goo.gl/XhMwdC

•Using the next slide to create your own project!

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Documentation and help guides

picamera.readthedocs.io

gpiozero.readthedocs.io

raspberrypi.org/resources

raspberrypi.org/education/downloads

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Visit: ksuiteach.org Visit: seeedudifferently.com Presentation is at: bigguyinabowtie.com/Google Check out my Youtube Channel! http://bit.ly/bigguybowtievideo Follow me on Twitter, Instagram, and Snapchat @bigguyinabowtie big

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